0 QTRS
f(0) → cons(0, n__f(n__s(n__0))) f(s(0)) → f(p(s(0))) p(s(X)) → X f(X) → n__f(X) s(X) → n__s(X) 0 → n__0 activate(n__f(X)) → f(activate(X)) activate(n__s(X)) → s(activate(X)) activate(n__0) → 0 activate(X) → X